Uni Ballpoint Pen Ball, Black Ink, Water Proof (UB155.24)

I needed some waterproof pens for work. These were well packaged and arrived in a timely manner from Japan. I am very happy with this purchase.

I bought this pen while on the hunt for a fine tipped, roller ball, water-proof pen for quick sketches that I shade with ink wash. I've liked Uni-Ball's pens in the past, so with the reasonable price and my past experience with the brand, I thought I'd give this one a try. The first thing I did was test how water proof the pen is. After testing three different cure times, I found that if you let the ink set for 15 minutes, it's pretty water resistant. It's not quite waterproof if you're doing multiple heavy washes or if you really scrub at it with a paintbrush so light hand only!My only real issue with this pen is it's just not dark enough for my liking. The ink dries in a bit of a warmer tone compared to the darker cool toned ink I prefer to work with. I found that I had to do multiple passes or fill-ins to get to a quality that I was ok with which can lead to surface damage depending on what paper you're using, especially because the tip is so fine.If you don't mind a slightly lighter pen, I'd say you should try it out! The price is great and the pen is well crafted. Feels good in the hand and the circumference of the pen is pretty standard and comfortable.

This is truly the most amazing pen for anyone who wants to write without the text bleeding through the page or fading with water. I tested this pen and soaked it with water and it does not bleed. This is the best pen for journaling.

I just used it the other night so I'm not sure how long lasting the amount of ink in the pen is, but I painted over my drawing with watercolor and the pen's ink is completely waterproof. There was no smudging or bleeding with the paint! Gonna bring it with me to travel.